[jira] [Commented] (LUCENE-4752) Merge segments to sort them

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[jira] [Commented] (LUCENE-4752) Merge segments to sort them

Nick Burch (Jira)

    [ https://issues.apache.org/jira/browse/LUCENE-4752?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13789199#comment-13789199 ]

Adrien Grand commented on LUCENE-4752:
--------------------------------------

I don't think it can help: this feature only makes documents sorted per-segment so this can't be used to get documents globally sorted.

> Merge segments to sort them
> ---------------------------
>
>                 Key: LUCENE-4752
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4752
>             Project: Lucene - Core
>          Issue Type: New Feature
>          Components: core/index
>            Reporter: David Smiley
>            Assignee: Adrien Grand
>             Fix For: 4.3
>
>         Attachments: LUCENE-4752-2.patch, LUCENE-4752.patch, LUCENE-4752.patch, LUCENE-4752.patch, LUCENE-4752.patch, LUCENE-4752.patch, LUCENE-4752.patch, LUCENE-4752.patch, natural_10M_ingestion.log, sorting_10M_ingestion.log
>
>
> It would be awesome if Lucene could write the documents out in a segment based on a configurable order.  This of course applies to merging segments to. The benefit is increased locality on disk of documents that are likely to be accessed together.  This often applies to documents near each other in time, but also spatially.



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